IMPALA-846: Add additional regression test.

This issue has coincidentally been resolved by the fix for IMPALA-820.
This patch adds an additional regression test for explicitly covering
IMPALA-846.

Change-Id: Ib60174676e5bb53de543a1db30adc05cef4d6593
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1719
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
Tested-by: jenkins